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聚甲基丙烯酸甲酯对二硫化钼拉伸应变控制及拉曼光谱研究

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机电工程技术 2023年第11期52卷 61-64页

作者：丘育辉陈伟权邓壬癸刘一颉何梓锋常雨李沭浩 ivan S.Babichuk 杨建五邑大学智能制造学部江门广东529020 乌克兰国家科学院半导体物理研究所乌克兰基辅03680

自石墨烯问世以来,二维过渡金属硫化物二硫化钼(MoS_(2))成为了科研人员的关注热点。MoS_(2)在其原子厚度下具有独特的光学、电学和机械性能,是制造柔性电子器件的理想材料。在机械性能方面,MoS_(2)可以承受较大的应变,比传统的半导体... 详细信息

自石墨烯问世以来,二维过渡金属硫化物二硫化钼(MoS_(2))成为了科研人员的关注热点。MoS_(2)在其原子厚度下具有独特的光学、电学和机械性能,是制造柔性电子器件的理想材料。在机械性能方面,MoS_(2)可以承受较大的应变,比传统的半导体材料高出了许多。研究中常使用聚二甲基硅氧烷(PDMS)直接作为单层MoS_(2)的柔性衬底,但由于它们之间的范德华力十分微弱,柔性衬底在拉伸和弯曲过程中,单层MoS_(2)会发生较大的滑移,对柔性衬底施加的应变不能有效地传递到二维MoS_(2)的晶格上,导致应变传递效率低下。为提高MoS_(2)应变传递效率,提出了将聚甲基丙烯酸甲酯(PMMA)旋涂在单层MoS_(2)上对其进行封装的方法,使PM‐MA与单层MoS_(2)形成强的相互作用力。结果表明,对PMMA进行多次应变控制时,传递到MoS_(2)的应变都相同,证实了MoS_(2)在应变过程中不会发生滑移。采用化学气相沉积法(CVD)制备MoS_(2),并用聚甲基丙烯酸甲酯(PMMA)转移到柔性衬底上。通过对柔性衬底施加应变控制,研究单层MoS_(2)在PMMA上应变传递时的拉曼光谱,探究PMMA对MoS_(2)的应变控制,证实MoS_(2)应变传递的有效性。

关键词：二硫化钼化学气相沉积法拉曼光谱应变 PMMA

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数字信号处理课程“地震数据重采样”综合性实验设计

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实验室研究与探索 2018年第2期37卷 178-182,192页

作者：武晔万永革武巴特尔石砚斌防灾科技学院地震科学系河北燕郊065201

在学生较好地掌握了数字信号处理理论与方法的基础上,为了更好地提高应用理论与方法解决学科领域实际问题的能力,设计了"地震数据重采样"综合性实验。该实验贯彻了以"问题为中心"的教学思想,以情境问题为学习起点,向学生呈现问题—"该... 详细信息

在学生较好地掌握了数字信号处理理论与方法的基础上,为了更好地提高应用理论与方法解决学科领域实际问题的能力,设计了"地震数据重采样"综合性实验。该实验贯彻了以"问题为中心"的教学思想,以情境问题为学习起点,向学生呈现问题—"该地震数据重采样过程是否合理?",引导学生进行探究式实验,使学生充分利用所学过的采样定理、频谱分析、滤波知识来分析并解决这一问题。实践表明,以"问题为中心"的综合性实验可使学生加深对理论知识的理解程度,可提高学生对理论知识的灵活运用能力,提高学生的学习兴趣与主动性、分析问题解决问题的能力和动手能力。

关键词：数字信号处理综合性实验重采样地震数据

“金砖国家”网络通信服务及数字产品交易市场发展现状

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欧亚经济 2020年第1期 53-77,127,128页

作者：伊万·沙拉法诺夫白树强对外经济贸易大学国际经济贸易学院

当前存在并广泛使用的计算机网络体系是数字产品交易兴起和发展的重要基础,反过来数字产品交易市场也成为促进计算机网络基础设施和通信服务水平发展的催化剂。在这种背景下,随着“金砖国家”网络覆盖率和通信服务水平的提高,网络用户... 详细信息

当前存在并广泛使用的计算机网络体系是数字产品交易兴起和发展的重要基础,反过来数字产品交易市场也成为促进计算机网络基础设施和通信服务水平发展的催化剂。在这种背景下,随着“金砖国家”网络覆盖率和通信服务水平的提高,网络用户对数字产品的需求日益增加。本文通过对“金砖国家”互联网基础设施和网络通信服务发展水平的分析发现,中国、俄罗斯和巴西已经形成相对完整、符合当前发展需要的网络服务体系,而印度和南非还处于后发阶段。通过对“金砖国家”数字产品交易市场发展现状的分析可以看出,中国在各类数字产品的生产和销售方面具有绝对优势,俄罗斯和巴西处于快速发展阶段,甚至在个别领域超过中国,而印度和南非的数字产品交易市场则处于萌芽阶段。

关键词： “金砖国家” 网络通信数字产品

Influence of Tooth Loss and Unmet Treatment Needs on the Social Aspects of Quality of Life and Self-esteem in Adolescents

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Journal of Pharmacy and Pharmacology 2019年第1期7卷 22-31页

作者： Pavlovic Maja Matijevic Dusanka Vukovic Branislava Mileusnic ivan Gajic Milica Jevremovic Ana Department of Prosthodontics Faculty of Stomatology PancevoUniversity Business AcademyNovi Sad 21000Serbia Department of Basic Sciences Faculty of Stomatology PancevoUniversity Business AcademyNovi Sad 21000Serbia Department of Periodontology Faculty of Stomatology PancevoUniversity Business AcademyNovi Sad 21000Serbia Department of Preventive and Pediatric Dentistry Faculty of Stomatology PancevoUniversity Business AcademyNovi Sad 21000Serbia

Adolescence represents specific period of life and development,when young person is going through physical,emotional and mental changes,risking poor general and oral health outcome that might affect quality of *** effects of poor oral health are various:difficulties with speaking and eating,pain and *** might cause emotional and mental problems,leading to avoidance of speaking,smiling and socializing with ***-sectional study included 234 participants(15-16 years old).The research instruments used in the study were questionnaire and clinical *** referred to socio-demographic characteristics of participants,their oral and general health related habits,self-evaluation of confidence and successfulness and effect of oral impacts on daily *** examination was used to determine dental status in terms of tooth loss,need for prosthodontic rehabilitation and presence of dental ***:24.6%(58)of adolescents had at least one tooth *** difference between the genders was obtained,as 32.5%girls had at least one tooth extracted compared to 8.1%of *** need for prosthodontic rehabilitation was present in 22.0%of *** problems negatively affected their sleep and emotions(14.4%and 10.2%few times in period of one month).Data analyses pointed one correlation between extracted teeth and psychosocial aspect of participants'life(difficulties and embarrassment when smiling,talking and spending time with friends,emotional problems).Unmet normative need for prosthodonic or orthodontic treatment affected participants'ability to sleep and *** of adolescents with extracted teeth was high,as well as normative treatment need for prosthodontic *** dental status affected quality of life of adolescents,especially emotional and mental *** service should provide sufficient information to adolescents about prevention of tooth loss and cons

关键词： Adolescent tooth loss normative treatments need quality of life

Effects of Creatine Monohydrate Diet on Muscle Metabolism,Quality,Sensory and Oxidative Stability of Pork in Female,Entire and Castrated Male Pigs

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Journal of Agricultural Science and Technology(A) 2020年第2期10卷 78-85页

作者： ivan Bahelka Ondřej Bučko Roman Stupka MichalŠprysl JaroslavČítek Department of Animal Science Czech University of Life Sciences PraguePrague 15621Czech Republic Department of Animal Husbandry Slovak Agricultural University NitraNitra 94901Slovak Republic

Forty-two (42) finishing pigs (entire males—EM, surgical castrates—SC and gilts—G, each of 14)—progeny of Landracesows and Hampshire × Pietrain boars, were included in the trial. They were randomly divided into control and experimental groups(each of seven). Control groups were fed the standard diet without any supplement. Experimental groups received standard diet withthe same composition as control but with supplement of creatine monohydrate (CMH, 2.0 g/kg of feed) for 30 d prior to *** of pigs had significant effect (p < 0.05) on drip loss and tenderness of pork when EM showed higher drip loss than SC and lowertenderness compared to other two groups (4.71% vs. 3.80%, resp. 3.23 vs. 3.91 and 4.12). Creatine level in plasma was increased byCMH supplementation in 46% in EM, 43% in SC and 41% in G. Similarly, concentration of phosphocreatine (PCr) in muscleincreased in 84% in EM, 88% in SC and 83% in G, respectively. CMH also improved meat colour L* (50.03 vs. 48.88) and reduceddrip loss in both EM (5.24% vs. 4.18%) and G (4.48% vs. 3.60%). Higher tenderness and better oxidative stability of pork after CMHsupplementation was found in all three sexes.

关键词： Eating quality feed additives oxidative stability pig pork quality

Physical-chemical modeling of oxidizing processes in high-sulfide mine tailings, and application to the Berikul site, Siberia

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Chinese Journal Of Geochemistry 2006年第B8期25卷 24-24页

作者： Olga L. Gaskova Svetlana B. Bortnikova ivan V. Gaskov Institute of Geology and Mineralogy SB RAS

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现代生产中维修的发展(五)

中国设备管理 1999年第10期 49-49页

作者： ivan ivanI 娄冰冰星阁

3.关系到增加公司盈利率的维修作业由于各种工作系统的可利用率和总体效率得到提高,使必须的工作系统数量和所需的房屋减少,还意味着可以减少资金.减少工作系统意味着可以减少维修人员,但却要求他们掌握更多的有用知识和为接受再教育做... 详细信息

3.关系到增加公司盈利率的维修作业由于各种工作系统的可利用率和总体效率得到提高,使必须的工作系统数量和所需的房屋减少,还意味着可以减少资金.减少工作系统意味着可以减少维修人员,但却要求他们掌握更多的有用知识和为接受再教育做好准备.随着公司环境的发展,将会有必要分设若干种维修职能,并将作业系统的管理结合到生产管理中去.

关键词：设备维修维修作业盈利率杜邦模型

Impact of cardiac magnet resonance imaging on management of ventricular septal rupture after acute myocardial infarction

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World Journal of Cardiology 2013年第5期5卷 151-153页

作者： Tobias Gassenmaier Armin Gorski ivan Aleksic Nikolas Deubner Frank Weidemann Meinrad Beer Department of Radiology University Hospital Wuerzburg 97080 Wuerzburg Germany Department of Cardiothoracic and Thoracic Vascular Surgery University Hospital Wuerzburg 97080 Wuerzburg Germany Department of Internal Medicine I University Hospital Wuerzburg 97080 Wuerzburg Germany Department of Pediatric Radiology Institute of Radiology Medical University of Graz 8036 Graz Austria

A 74-year-old man was admitted to the cardiac catheterization laboratory with acute myocardial infarction. After successful angioplasty and stent implantation into the right coronary artery, he developed cardiogenic shock the following day. Echocardiography showed ventricular septal rupture. Cardiac magnet resonance imaging (MRI) was performed on the critically ill patient and provided detailed information on size and localization of the ruptured septum by the use of fast MRI sequences. Moreover, the MRI revealed that the ventricular septal rupture was within the myocardial infarction area, which was substantially larger than the rupture. As the patient's condition worsened, he was intubated and had intra-aortic balloon pump implanted, and extracorporeal membrane oxygenation was initiated. During the following days, the patient's situation improved, and surgical correction of the ventricular septal defect could successfully be performed. To the best of our knowledge, this case report is the first description of postinfarction ventricular septal rupture by the use of cardiac MRI in an intensive care patient with cardiogenic shock and subsequent successful surgical repair.

关键词： Cardiac magnetic resonance imaging Ventricular septal rupture Myocardial infarction surgical repair Extracorporeal membrane oxygenation

独立与共享:潮流办公空间设计之变——SOHO 3Q

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设计家 2015年第6期 44-49页

作者： Wendy Saunders Vincent de Graaf ivan Yu German Riog Byungmin Jeon Kun Zhang Liat Goldman Lily Zhu Alex Fripp Bertil Dongker Jerry Yin AIM

在生活方式多元化和工作追求高效快捷的今天,＂朝九晚五＋格子间＂的工作模式不再是都市标配。各种极具创意的工作坊和灵活多变的工作空间应运而生,不仅成为上班族新宠,更掀起了一场潮流办公间设计之变!AIM为SOHO打造的最新的3Q共享办... 详细信息

在生活方式多元化和工作追求高效快捷的今天,＂朝九晚五＋格子间＂的工作模式不再是都市标配。各种极具创意的工作坊和灵活多变的工作空间应运而生,不仅成为上班族新宠,更掀起了一场潮流办公间设计之变!AIM为SOHO打造的最新的3Q共享办公间就以摩登现代又极富创意的设计理念率先为＂潮流办公间变革＂提供了一个教科书式的范例。

关键词：空间设计 SOHO 潮流共享生活方式设计理念多元化上班族